Kernel: udmabuf: improper validation of array index leading to local privilege escalation
Priority MEDIUM 40CWE-129Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-129 and the CVSS impact.
Summary
A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0101 63rd percentileScored 2026-11-07
Fix Fixed kernel (Linux): 5.4.202, 5.10.127, 5.15.51 +2Red Hat: 5 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | kernel | 4.20 to before 5.4.202; 5.5 to before 5.10.127; 5.11 to before 5.15.51; 5.16 to before 5.18.8 | 5.4.202, 5.10.127, 5.15.51, 5.18.8, 5.19 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 5.14.0-162.6.1.el9_1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 5.14.0-162.6.1.rt21.168.el9_1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 5.14.0-162.6.1.el9_1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | — | 5.14.0-70.58.1.el9_0 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | — | 5.14.0-70.58.1.rt21.129.el9_0 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | Not affected | CNA |
- kernel VendorLinux Affected 4.20 to before 5.4.202; 5.5 to before 5.10.127; 5.11 to before 5.15.51; 5.16 to before 5.18.8 Fixed in 5.4.202, 5.10.127, 5.15.51, 5.18.8, 5.19 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 5.14.0-162.6.1.el9_1 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 5.14.0-162.6.1.rt21.168.el9_1 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 5.14.0-162.6.1.el9_1 Patch available CNA
- Red Hat Enterprise Linux 9.0 Extended Update Support VendorRed Hat Affected — Fixed in 5.14.0-70.58.1.el9_0 Patch available CNA
- Red Hat Enterprise Linux 9.0 Extended Update Support VendorRed Hat Affected — Fixed in 5.14.0-70.58.1.rt21.129.el9_0 Patch available CNA
- Red Hat Enterprise Linux 9.0 Extended Update Support VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 5.19; 4.20 to before 5.4.202; 5.5 to before 5.10.127; 5.11 to before 5.15.51; 5.16 to before 5.18.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:* | 5.19 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* | 5.19 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* | 5.19 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* | 5.19 rc3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 5.19; 4.20 to before 5.4.202; 5.5 to before 5.10.127; 5.11 to before 5.15.51; 5.16 to before 5.18.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:-:*:*:*:*:*:* Versions 5.19 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:* Versions 5.19 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:* Versions 5.19 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:* Versions 5.19 rc3 Vulnerable ·Linux
Remediation
- Fix · CNA kernel (Linux) Fixed in 5.4.202, 5.10.127, 5.15.51, 5.18.8, 5.19
Red Hat 5 advisories
- RHSA-2023:3490 Released 2023-06-06 · Red Hat rating Importantkpatch-patch security update
- Red Hat Enterprise Linux BaseOS EUS (v.9.0) kpatch-patch-5_14_0-70_30_1-1-6.el9_0, kpatch-patch-5_14_0-70_36_1-1-5.el9_0, kpatch-patch-5_14_0-70_43_1-1-4.el9_0 +3
- RHSA-2023:3465 Released 2023-06-06 · Red Hat rating Importantkernel security and bug fix update
- Red Hat CodeReady Linux Builder EUS (v.9.0) kernel-tools-libs-devel-5.14.0-70.58.1.el9_0
- Red Hat Enterprise Linux AppStream EUS (v.9.0) kernel-debug-devel-5.14.0-70.58.1.el9_0, kernel-debug-devel-matched-5.14.0-70.58.1.el9_0, kernel-devel-5.14.0-70.58.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS EUS (v.9.0) bpftool-5.14.0-70.58.1.el9_0, kernel-5.14.0-70.58.1.el9_0, kernel-abi-stablelists-5.14.0-70.58.1.el9_0 +14
- RHSA-2023:3470 Released 2023-06-06 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time EUS (v.9.0) kernel-rt-5.14.0-70.58.1.rt21.129.el9_0, kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0, kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0 +7
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) kernel-rt-5.14.0-70.58.1.rt21.129.el9_0, kernel-rt-core-5.14.0-70.58.1.rt21.129.el9_0, kernel-rt-debug-5.14.0-70.58.1.rt21.129.el9_0 +9
Show 2 more Red Hat advisories
- RHSA-2022:8267 Released 2022-11-15 · Red Hat rating Moderatekernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-162.6.1.el9_1
- Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-162.6.1.el9_1, kernel-debug-devel-matched-5.14.0-162.6.1.el9_1, kernel-devel-5.14.0-162.6.1.el9_1 +5
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-162.6.1.el9_1, kernel-5.14.0-162.6.1.el9_1, kernel-abi-stablelists-5.14.0-162.6.1.el9_1 +14
- RHSA-2022:7933 Released 2022-11-15 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-5.14.0-162.6.1.rt21.168.el9_1 +7
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core-5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-5.14.0-162.6.1.rt21.168.el9_1 +9
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2022:8267 |
| Red Hat CodeReady Linux Builder EUS (v.9.0) | Fixed | RHSA-2023:3465 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux AppStream EUS (v.9.0) | Fixed | RHSA-2023:3465 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2022:8267 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.0) | Fixed | RHSA-2023:3465, RHSA-2023:3490 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2022:7933 |
| Red Hat Enterprise Linux Real Time EUS (v.9.0) | Fixed | RHSA-2023:3470 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2022:7933 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0) | Fixed | RHSA-2023:3470 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2023-2008
- 2026-10-03 Alias added: GHSA-qvq2-2xfw-f6x6
References
Advisory 7
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2023-2008 · CVE Program
- CVE-2023-2008 · NVD
- FIRST EPSS
- GHSA-qvq2-2xfw-f6x6 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-2008 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences